Silica sand consists of well-rounded, sand composed of almost pure quartz grains. Quartz, or silicon dioxide (SiO2), is the most common mineral found on the Earth’s surface and is found in rocks like granite, gneiss, and sandstone. The value of silica sand can be significantly higher than sand and gravel used in the construction industry.
"A robot is an actuated mechanism programmable in two or more axes with a degree of autonomy, moving within its environment, to perform intended tasks. Autonomy in this context means the ability to perform intended tasks based on current state and sensing, without human intervention.
A service robot is a robot that performs useful tasks for humans or equipment excluding industrial automation application.
Botox is a neurotoxic protein produced by the bacterium Clostridium botulinum and related species in the reproduction process. Botox is a polypeptide which molecular weight is 150kD and is also one of the most poisonous natural proteins. It is so easy to be produced, purified and refined due to its stable property that Botox is used widely in Experimental Research and Clinical Application at the early stage.
Styrene maleic anhydride (SMA) is a synthetic polymer that is built-up of styrene and maleic anhydride monomers. The polymer is formed by a radical polymerization, using an organic peroxide as the initiator. The main characteristics of SMA copolymer are its transparent appearance, high heat resistance, high dimensional stability, and the specific reactivity of the anhydride groups. The latter feature results in the solubility of SMA in alkaline (water-based) solutions and dispersion.